The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 17, 2024
Filed:
Feb. 09, 2023
Applicant:
Red Hat, Inc., Raleigh, NC (US);
Inventors:
Michael Tsirkin, Yokneam Illit, IL;
Paolo Bonzini, Milan, IT;
Assignee:
Red Hat, Inc., Raleigh, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/455 (2018.01); G06F 12/0882 (2016.01);
U.S. Cl.
CPC ...
G06F 9/45558 (2013.01); G06F 12/0882 (2013.01); G06F 2009/45595 (2013.01);
Abstract
A processing device of a host machine detects a read access of a memory address by a guest executing on the host machine, and causes a memory page to be provided to the guest responsive to detecting the read access. The memory address is associated with a device slot of a communication bus that is not associated with at least one hardware device, and the memory page has a page table entry, mapped to the memory address, that indicates that the memory page is a read-only memory page for the guest.